COOLIGOMERIZATION OF THIENYL-CONTAINING ORGANIC CYCLOSILOXANES WITH 1,3-BIS-(3-GLYCYDOXYPROPYL)TETRAMETHYLDISILOXANES

The co-oligomerization of thienylcontaining organic cyclosiloxanes wit h 1,3-bis(3-glycydoxypropyl)tetramethyldisiloxanes initiated by the si loxane of tetramethilamonium is studied. It is found out, that the vel ocity of expenditure of thienylcontaining organocyclosiloxanes is desc ribed by the linear equations depending on its instant concentration. The constants of velocity of expenditure of organocyclosiloxanes is ca lculated and is shown, that they depend on the concentration of 1,3-bi s(3-glycydoxypropyl)tetramethyldisiloxanes in the reaction mixture, Th e velocity limitation is reached, when the Si-O-Si bound in 1,3-bis(3- glycydoxypropyl)tetramethyldisiloxanes is splitted. Using the method o f gel permeable chromatography it is shown, that in the presence of po lar admixture (dimethilphormamide) the system reaches the equilibrium much faster, producing the oligomeres of given molecular mass.